void *RecvFromAPP(void *arg)
{
    char buf[2048+1]={0};
    char temp[2048+1]={0};
    int pos=0;
    int res=0;
    int len=0;
    while(1)
    {
        if(pos<len)
        {
            memset(temp,0,sizeof(temp));
            memcpy(temp,buf+pos,len-pos);
            memset(buf,0,sizeof(buf));
            memcpy(buf,temp,len-pos);
            pos=len-pos;
        }
        else
            pos=0;
        res=read_loop(app_arg.appsockfd,buf+pos,2048-pos);
        if(res==-1)
            break;
        else if(res==0)
        {
            Socket_Delete(app_arg.appsockfd);
            break;
        }
        else if(res>0)
        {
            len=pos+res;
            pos=Packet_DetachFromAPP(buf,len); //这个是分成完整的包，并放到队列中，会用来队列锁
        }
    }
    return NULL;
}